21831315

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:260

約数の個数: 64

約数和(自身を含む): 41513472

約数和(自身を除く): 19682157

約数列:

[1, 3, 5, 11, 15, 17, 33, 43, 51, 55, 85, 129, 165, 181, 187, 215, 255, 473, 543, 561, 645, 731, 905, 935, 1419, 1991, 2193, 2365, 2715, 2805, 3077, 3655, 5973, 7095, 7783, 8041, 9231, 9955, 10965, 15385, 23349, 24123, 29865, 33847, 38915, 40205, 46155, 85613, 101541, 116745, 120615, 132311, 169235, 256839, 396933, 428065, 507705, 661555, 1284195, 1455421, 1984665, 4366263, 7277105, 21831315]

約数ペア:

[(1, 21831315), (3, 7277105), (5, 4366263), (11, 1984665), (15, 1455421), (17, 1284195), (33, 661555), (43, 507705), (51, 428065), (55, 396933), (85, 256839), (129, 169235), (165, 132311), (181, 120615), (187, 116745), (215, 101541), (255, 85613), (473, 46155), (543, 40205), (561, 38915), (645, 33847), (731, 29865), (905, 24123), (935, 23349), (1419, 15385), (1991, 10965), (2193, 9955), (2365, 9231), (2715, 8041), (2805, 7783), (3077, 7095), (3655, 5973)]